VMV D3 - Headphones S.M.S.L - Free user manual and instructions

Product Type	High-End R-2R Digital-to-Analog Converter (DAC)
Brand	S.M.S.L
Model	VMV D3
Inputs	USB, Optical, Coaxial, AES/EBU, I²S (HDMI)
Outputs	RCA (single-ended), XLR (balanced)
DAC Chip	4x PCM1704U-J (BB), 2 per channel, fully balanced
Digital Filter	SM5847
USB Controller	XMOS XU216 (2nd gen, 16 cores)
USB Compatibility	Windows 7/8/8.1/10, Mac OSX, Linux
USB Bit Depth	16–32 bit
USB Sampling Rate (PCM)	44.1–768 kHz
USB Sampling Rate (DSD)	2.8224–22.5792 MHz (DSD512)
Optical/Coaxial/AES Bit Depth	16–24 bit
Optical/Coaxial/AES Sampling Rate (PCM)	44.1–192 kHz
THD+N	0.001%
Dynamic Range	112 dB
Signal-to-Noise Ratio	112 dB
Clock System	Accusilicon ultra-low phase noise crystals, CPLD jitter reduction, external clock input (10MHz or word clock)
Power Consumption	10 W
Standby Power	< 0.8 W
Dimensions (W x H x D)	280 x 51 x 240 mm
Weight	3.96 kg
Remote Control	Yes, with color LCD and new UI; range ~8 m
Chassis	All aluminum alloy CNC, separate power supply and motherboard
Transformer	Custom low-noise sealed toroidal by Noratel (UK)

Frequently Asked Questions - VMV D3 S.M.S.L

What is the VMV D3?

The VMV D3 is a high-end R-2R digital-to-analog converter (DAC) from S.M.S.L, designed for audiophile use with headphones or speakers.

What input options does the VMV D3 support?

It supports USB, optical, coaxial, AES/EBU (XLR), and I²S (via HDMI) inputs.

What is the maximum sample rate for USB input?

USB input supports PCM up to 768 kHz and DSD up to 22.5792 MHz (DSD512 native).

Can the VMV D3 be used with an external clock?

Yes, it accepts an external 10 MHz or word clock (44.1 kHz) via the dedicated input, with selectable clock modes in the menu.

How do I change the input source?

Use the input select knob on the front panel or the remote control to cycle through USB, optical, coaxial, AES/EBU, and I²S.

What are the supported operating systems for USB?

Windows 7/8/8.1/10, Mac OSX, and Linux are supported. No driver is needed for Mac or Linux.

How do I reset the VMV D3 to factory settings?

Press and hold the power button while connecting the power cord, and keep holding until the logo appears on the screen.

What is the oversampling setting for?

The OS Rate setting (4x or 8x) adjusts the digital filter SM5847; 8x offers better performance but subtle sound differences.

Does the VMV D3 work with headphones directly?

No, it is a DAC only without a headphone amplifier. You need an external amplifier or active speakers.

What is the warranty period?

S.M.S.L offers a 1-year free repair for normal use, and a 7-day return/exchange policy if defective.

USER MANUAL VMV D3 S.M.S.L

Main unit back....19

Operation Instructions....20-23

Factory Reset/Warranty Terms....24

技术参数

输入方式....USB /光纤/同轴/I²S/ AES(EBU)

输出方式 ....单端线路/平衡线路

THD+N 0.001%

动态范围 112dB

信噪比....112dB

USB传输方式 …… 异步传输

USB兼容性....Windows 7 / 8 / 8.1 / 10, Mac OSX, Linux

位深....USB / I²S 1bit, 16\~32bit

光纤/同轴/AES(EBU) 1bit, 16\~24bit

采样率....USB / I²S PCM 44.1\~768kHz

DSD 2.8224\~22.5792MHz

光纤/同轴/AES(EBU) PCM 44.1\~192kHz

消耗功率 10W

待机功耗 ....../<0.8W

1. 开关机
2. 输入选择按键
3. 显示屏

主机背面

The lightning flash with arrowhead symbol, with in an equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.

The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.

Safe use only under elevation 2000m.

WARNING:

TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.

The contents of this manual are updated without prior notice. If the function of the product you are using is inconsistent with the instructions, the function of the product shall prevail!

Features

• Every detail is high end design.
• 4 pieces of legendary R-2R chip PCM1704U-J from BB, 2 pieces per channel, fully balanced design, maximize chip performance!
- USB uses XMOS second generation 16 core processor XU216, supports native DSD512 and 32-bit 768kHz!
• Top digital filter chip SM5847.
• The clock system uses two accusilicon ultra-low phase noise crystal oscillators.
- Using Altera's high-speed CPLD to process the clock and reduce jitter.
• Support LVDS level I²S transmission (using HDMI interface), can transmit digital audio with the lowest jitter!
• Built in low clock jitter VCXO and PLL, support access to external clock!
• Full function remote control with color LCD and newly developed user interface.
• Use 7 OPA1612 top OP-AMPs from TI.
• High precision, low temperature drift, resistor and capacitor are widely used.
• Low noise discrete component power supply circuit.
- Customized low-noise sealed toroidal transformer manufactured by Noratel, UK,
• All aluminum alloy CNC shell, separate power supply and motherboard design, effectively isolate power interference.

Specification

Input ...... USB / Optical / Coaxial / AES(EBU)

Output ...... RCA /XLR

THD+N 0.001%

Dynamic range ....112dB

SNR 112dB

USB transmission Asynchronization

USB compatibility ....Windows 7 / 8 / 8.1 / 10, Mac OSX、Linux

Bit depth....USB / PS 1bit, 16 \~ 32bit

Optical / Coaxial/AES(EBU) 1bit, 16 \~ 24bit

Sampling rate ....USB / I²S PCM 44.1 \~ 768kHz

DSD 2.8224 \~ 22.5792MHz

Optical / Coaxial/AES(EBU) PCM 44.1 \~ 192kHz

Power Consumption ....10W

Standby power .... <0.8W

Size 280X240X51mm (WxHxD)

Weight 3.96kg

Remote Control

Install 2 x AAA batteries as instructions

When using the remote control, point it toward the remote con-trol signal receiver on the main unit from a distance of 5 m (16 ft) or less. Do not place obstructions between the main unit and the remote control.

The remote control might not work if the remote control signal receiver on the unit is exposed to direct sunlight or bright light. If this occurs, try moving the unit. Beware that use of this remote control could cause the unin-tentional operation of other devices that can be controlled by infra.

Functions

Main unit front

1. Turn on/OFF
2. Input select knob
3. Display

Main unit back

1. Clock in 9. Coaxial input
2. Optical input 10. I²S input
3. Balanced output 11. USB input
4. Line output 12. Power input
5. AES/EBU input

Operation Instructions

Main Display

1. Input selection
2. Audio format / Sampling rate
3. Volume

1. INPUT

USB AUDIO
■ OPTICAL
COAXIAL
AES/EBU
■ I²S(HDMI)

2. OS Rate

■ OSR4x
■ OSR8x

Note: This setting is to set the SM5847 to work at 4 times oversampling or 8 times oversampling, the sound will be slightly different, 8 times oversampling performance is better

3. CLOCK MODE

■ INTERNAL
■ DIR SYNC

(This setting does not require an external input clock signal, except for the USB input, all are valid. This setting will use the D3 internal VCXO to synchronize with the bit clock of the external input signal, which can greatly reduce the clock jitter generated during digital audio transmission!)

■ EXT 10MHz (USB)

(This setting requires an external input 10MHz clock signal, which only works for the USB input. The internal clock is used for other inputs. At this time, D3 uses a 10MHz clock to generate the clock required for USB playback. This setting can greatly improve the clock accuracy!)

■ EXT 10MHz (ALL)

(This setting requires an external input of 10MHz clock signal, which works on all inputs. When using, the signal source and D3 must use the same 10MHz clock source at the same time to work synchronously, otherwise it will cause noise!)

■ EXT WORD

(This setting requires an external input word clock (frequency 44.1kHz) signal, which works on all inputs. When using, the signal source and D3 must use the same 44.1kHz clock source at the same time to work in synchronization, otherwise it will cause noise!)

4. AUDIO PHASE

■ NORMAL (2+,3-)
■ INVERTED(2-,3+)

NORMAL INVERTED

3+

Note: This setting valid for both RCA and XLR output!

5. I²S MODE

■ NORMAL
■ INVERTED

NORMAL INVERTED

Note: This option is used to match different I²S interface standards, please check the interface definition of the signal source before use

6. I²S DSD CH

■ DSDL=PCM DATA (The DSD left channel using the PCM DATA pin)
■ DSDL=PCM LRCK (The DSD left channel using the PCM LRCK pin)

NORMAL INVERTED

Note: This option is used to match different I ^2 S interface standards, please check the interface definition of the signal source before use

7. I²S DSD FLAG

■ DSD FLAG=PIN15
■ DSD FLAG=PIN14

■ The range is 5 seconds-60 seconds. After setting, the screen will automatically go off within this time, and the screen will re-light up if you operate the remote control or the knob at any time.

9. BRIGHTNESS

■ LEVEL1-6

Factory Reset

Connect the power cord when pressing the power button, until the screen shows logo.

Warranty Terms

1. The Term of Service

Foshan Shuangmusanlin Technology Co., Ltd promises to offer good-quality products. If the product is broken in 7 days after purchasing when you use it normally, you can choose to send it back for return, replacement or repairing (only the product does not affect the second sales can be returned). Repairing for free in one year if you use it normally.

1. Date of purchase is in accordance with the date on invoice or receipt uesd by seller, and if you buy it on line, you can show the screenshot of trade.

2. If an inappropriate usage causes the unit damaged, the warranty will be void. As below.

3. All damages by inappropriate use, including using it under non-normal working environment or without following the instructions.
   • Dismantling, refitting, repairing by user in private.

4. Causing damage by using some fittings instead of the designative or accredited ones.

5. Cannot provide credible proof of purchase.

6. Sending it back to our company for repairing.

5.Contact your S.M.S.L Audio reseller for a return or replacement.